./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:37:10,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:37:10,656 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:37:10,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:37:10,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:37:10,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:37:10,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:37:10,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:37:10,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:37:10,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:37:10,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:37:10,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:37:10,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:37:10,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:37:10,690 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:37:10,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:37:10,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:37:10,693 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:37:10,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:37:10,693 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:37:10,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:37:10,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:37:10,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:37:10,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:37:10,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:37:10,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:37:10,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f [2024-11-06 18:37:11,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:37:11,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:37:11,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:37:11,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:37:11,012 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:37:11,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2024-11-06 18:37:12,243 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:37:12,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:37:12,399 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2024-11-06 18:37:12,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/350d9d9f4/43c51dce7ae14b16ba176356d7a7316c/FLAG23e92e7fc [2024-11-06 18:37:12,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/350d9d9f4/43c51dce7ae14b16ba176356d7a7316c [2024-11-06 18:37:12,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:37:12,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:37:12,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:37:12,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:37:12,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:37:12,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42813e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12, skipping insertion in model container [2024-11-06 18:37:12,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,447 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:37:12,551 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2024-11-06 18:37:12,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:37:12,576 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:37:12,584 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2024-11-06 18:37:12,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:37:12,600 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:37:12,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12 WrapperNode [2024-11-06 18:37:12,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:37:12,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:37:12,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:37:12,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:37:12,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,624 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2024-11-06 18:37:12,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:37:12,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:37:12,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:37:12,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:37:12,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,636 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,650 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-06 18:37:12,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,662 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:37:12,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:37:12,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:37:12,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:37:12,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (1/1) ... [2024-11-06 18:37:12,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:37:12,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:37:12,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:37:12,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:37:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:37:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 18:37:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 18:37:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:37:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:37:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:37:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:37:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:37:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:37:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:37:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:37:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:37:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:37:12,776 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:37:12,777 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:37:12,869 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-06 18:37:12,869 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:37:12,879 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:37:12,879 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 18:37:12,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:37:12 BoogieIcfgContainer [2024-11-06 18:37:12,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:37:12,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:37:12,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:37:12,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:37:12,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:37:12" (1/3) ... [2024-11-06 18:37:12,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5182dcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:37:12, skipping insertion in model container [2024-11-06 18:37:12,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:37:12" (2/3) ... [2024-11-06 18:37:12,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5182dcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:37:12, skipping insertion in model container [2024-11-06 18:37:12,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:37:12" (3/3) ... [2024-11-06 18:37:12,890 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_nondet_vars.c [2024-11-06 18:37:12,900 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:37:12,901 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:37:12,942 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:37:12,950 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@32d715d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:37:12,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:37:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:37:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 18:37:12,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:37:12,964 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:37:12,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:37:12,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:37:12,969 INFO L85 PathProgramCache]: Analyzing trace with hash -687560493, now seen corresponding path program 1 times [2024-11-06 18:37:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:37:12,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495752448] [2024-11-06 18:37:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:37:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:37:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:37:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:37:13,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:37:13,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495752448] [2024-11-06 18:37:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495752448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:37:13,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:37:13,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:37:13,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649734990] [2024-11-06 18:37:13,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:37:13,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 18:37:13,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:37:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 18:37:13,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 18:37:13,130 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:37:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:37:13,139 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-11-06 18:37:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 18:37:13,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-06 18:37:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:37:13,144 INFO L225 Difference]: With dead ends: 47 [2024-11-06 18:37:13,144 INFO L226 Difference]: Without dead ends: 21 [2024-11-06 18:37:13,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 18:37:13,147 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:37:13,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:37:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-06 18:37:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-06 18:37:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:37:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-06 18:37:13,174 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 19 [2024-11-06 18:37:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:37:13,174 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-06 18:37:13,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:37:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-06 18:37:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 18:37:13,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:37:13,175 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:37:13,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:37:13,176 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:37:13,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:37:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1294753969, now seen corresponding path program 1 times [2024-11-06 18:37:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:37:13,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585774099] [2024-11-06 18:37:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:37:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:37:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:37:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:37:13,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:37:13,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585774099] [2024-11-06 18:37:13,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585774099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:37:13,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:37:13,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 18:37:13,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807498450] [2024-11-06 18:37:13,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:37:13,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:37:13,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:37:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:37:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:37:13,356 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:37:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:37:13,399 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-06 18:37:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 18:37:13,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-06 18:37:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:37:13,400 INFO L225 Difference]: With dead ends: 39 [2024-11-06 18:37:13,400 INFO L226 Difference]: Without dead ends: 31 [2024-11-06 18:37:13,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:37:13,401 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:37:13,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:37:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-06 18:37:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2024-11-06 18:37:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:37:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-06 18:37:13,405 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 19 [2024-11-06 18:37:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:37:13,405 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-06 18:37:13,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:37:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-06 18:37:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-06 18:37:13,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:37:13,406 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:37:13,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:37:13,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:37:13,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:37:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash -554531054, now seen corresponding path program 1 times [2024-11-06 18:37:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:37:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987576939] [2024-11-06 18:37:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:37:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:37:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:37:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:37:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:37:13,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:37:13,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987576939] [2024-11-06 18:37:13,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987576939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:37:13,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017032084] [2024-11-06 18:37:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:13,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:37:13,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:37:13,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:37:13,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 18:37:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:13,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 18:37:13,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:37:14,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:37:14,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-06 18:37:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:37:14,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:37:14,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-06 18:37:14,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-06 18:37:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:37:14,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017032084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:37:14,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:37:14,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 19 [2024-11-06 18:37:14,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820341527] [2024-11-06 18:37:14,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:37:14,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-06 18:37:14,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:37:14,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-06 18:37:14,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:37:14,405 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-06 18:37:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:37:14,549 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-11-06 18:37:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 18:37:14,550 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 27 [2024-11-06 18:37:14,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:37:14,550 INFO L225 Difference]: With dead ends: 47 [2024-11-06 18:37:14,550 INFO L226 Difference]: Without dead ends: 45 [2024-11-06 18:37:14,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-06 18:37:14,551 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 59 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:37:14,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 159 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:37:14,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-06 18:37:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2024-11-06 18:37:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 18:37:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-06 18:37:14,557 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 27 [2024-11-06 18:37:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:37:14,557 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-06 18:37:14,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-06 18:37:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-06 18:37:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-06 18:37:14,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:37:14,558 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:37:14,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 18:37:14,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:37:14,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:37:14,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:37:14,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1909003512, now seen corresponding path program 1 times [2024-11-06 18:37:14,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:37:14,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518715193] [2024-11-06 18:37:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:14,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:37:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:14,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:37:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:14,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:37:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:14,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:37:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:14,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:37:14,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518715193] [2024-11-06 18:37:14,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518715193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:37:14,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438411634] [2024-11-06 18:37:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:14,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:37:14,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:37:14,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:37:14,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 18:37:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:14,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:37:14,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:37:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:14,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:37:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438411634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:37:14,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:37:14,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-06 18:37:14,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734147020] [2024-11-06 18:37:14,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:37:14,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:37:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:37:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:37:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:37:14,990 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-06 18:37:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:37:15,051 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2024-11-06 18:37:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 18:37:15,052 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-06 18:37:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:37:15,052 INFO L225 Difference]: With dead ends: 53 [2024-11-06 18:37:15,052 INFO L226 Difference]: Without dead ends: 41 [2024-11-06 18:37:15,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:37:15,054 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:37:15,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 116 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:37:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-06 18:37:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2024-11-06 18:37:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 18:37:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-06 18:37:15,064 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 31 [2024-11-06 18:37:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:37:15,064 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-06 18:37:15,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-06 18:37:15,064 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-06 18:37:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 18:37:15,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:37:15,065 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:37:15,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 18:37:15,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:37:15,266 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:37:15,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:37:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1118110763, now seen corresponding path program 2 times [2024-11-06 18:37:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:37:15,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392946588] [2024-11-06 18:37:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:15,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:37:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:15,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:37:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:15,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:37:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:15,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:37:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:15,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:37:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:37:15,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392946588] [2024-11-06 18:37:15,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392946588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:37:15,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767452567] [2024-11-06 18:37:15,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:37:15,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:37:15,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:37:15,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:37:15,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 18:37:15,658 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:37:15,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:37:15,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-06 18:37:15,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:37:15,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:37:16,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-06 18:37:16,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-06 18:37:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:16,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:37:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767452567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:37:24,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 18:37:24,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 25 [2024-11-06 18:37:24,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542847247] [2024-11-06 18:37:24,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 18:37:24,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-06 18:37:24,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:37:24,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-06 18:37:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=665, Unknown=2, NotChecked=0, Total=812 [2024-11-06 18:37:24,491 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 20 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 18:37:28,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-06 18:37:32,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-06 18:37:40,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-06 18:37:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:37:40,968 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2024-11-06 18:37:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-06 18:37:40,973 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 20 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 35 [2024-11-06 18:37:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:37:40,974 INFO L225 Difference]: With dead ends: 75 [2024-11-06 18:37:40,974 INFO L226 Difference]: Without dead ends: 73 [2024-11-06 18:37:40,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=342, Invalid=1377, Unknown=3, NotChecked=0, Total=1722 [2024-11-06 18:37:40,975 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 226 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 34 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:37:40,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 172 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 249 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-06 18:37:40,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-06 18:37:40,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 41. [2024-11-06 18:37:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 18:37:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-06 18:37:40,986 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 35 [2024-11-06 18:37:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:37:40,986 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-06 18:37:40,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 20 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 18:37:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-06 18:37:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 18:37:40,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:37:40,987 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:37:41,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:37:41,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:37:41,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:37:41,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:37:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1711359563, now seen corresponding path program 2 times [2024-11-06 18:37:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:37:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328310656] [2024-11-06 18:37:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:37:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:41,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:37:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:41,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:37:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:41,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:37:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:41,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:37:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:41,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:37:41,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328310656] [2024-11-06 18:37:41,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328310656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:37:41,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113474567] [2024-11-06 18:37:41,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:37:41,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:37:41,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:37:41,460 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:37:41,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 18:37:41,507 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:37:41,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:37:41,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-06 18:37:41,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:37:41,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:37:41,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2024-11-06 18:37:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:41,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:37:41,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-06 18:37:41,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-06 18:37:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:42,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113474567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:37:42,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:37:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 32 [2024-11-06 18:37:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260477986] [2024-11-06 18:37:42,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:37:42,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-06 18:37:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:37:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-06 18:37:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2024-11-06 18:37:42,094 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 32 states, 32 states have (on average 1.75) internal successors, (56), 27 states have internal predecessors, (56), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-06 18:37:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:37:42,622 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2024-11-06 18:37:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-06 18:37:42,622 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.75) internal successors, (56), 27 states have internal predecessors, (56), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-11-06 18:37:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:37:42,624 INFO L225 Difference]: With dead ends: 74 [2024-11-06 18:37:42,624 INFO L226 Difference]: Without dead ends: 72 [2024-11-06 18:37:42,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=1723, Unknown=0, NotChecked=0, Total=2162 [2024-11-06 18:37:42,625 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 191 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:37:42,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 196 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:37:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-06 18:37:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2024-11-06 18:37:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 45 states have internal predecessors, (48), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 18:37:42,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-06 18:37:42,631 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 39 [2024-11-06 18:37:42,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:37:42,632 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-06 18:37:42,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.75) internal successors, (56), 27 states have internal predecessors, (56), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-06 18:37:42,632 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-06 18:37:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 18:37:42,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:37:42,633 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:37:42,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:37:42,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-06 18:37:42,837 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:37:42,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:37:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -181817714, now seen corresponding path program 3 times [2024-11-06 18:37:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:37:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037162603] [2024-11-06 18:37:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:37:42,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:37:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:43,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:37:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:43,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:37:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:43,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:37:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:43,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:37:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:43,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:37:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:37:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:37:43,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:37:43,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037162603] [2024-11-06 18:37:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037162603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:37:43,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126020982] [2024-11-06 18:37:43,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:37:43,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:37:43,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:37:43,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:37:43,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 18:37:43,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-06 18:37:43,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:37:43,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-06 18:37:43,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:37:43,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:37:43,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2024-11-06 18:37:43,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2024-11-06 18:37:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:37:43,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:37:47,766 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (< 3 (select (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8)))) is different from false [2024-11-06 18:37:47,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126020982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:37:47,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 18:37:47,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 29 [2024-11-06 18:37:47,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854514275] [2024-11-06 18:37:47,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 18:37:47,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-06 18:37:47,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:37:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-06 18:37:47,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=789, Unknown=1, NotChecked=58, Total=992 [2024-11-06 18:37:47,778 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 25 states have internal predecessors, (49), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-06 18:37:51,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-06 18:37:56,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-06 18:38:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:00,327 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2024-11-06 18:38:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-06 18:38:00,327 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 25 states have internal predecessors, (49), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 47 [2024-11-06 18:38:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:00,328 INFO L225 Difference]: With dead ends: 110 [2024-11-06 18:38:00,328 INFO L226 Difference]: Without dead ends: 108 [2024-11-06 18:38:00,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=357, Invalid=1807, Unknown=2, NotChecked=90, Total=2256 [2024-11-06 18:38:00,329 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 180 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:00,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 287 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 464 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2024-11-06 18:38:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-06 18:38:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 66. [2024-11-06 18:38:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 54 states have internal predecessors, (58), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 18:38:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2024-11-06 18:38:00,342 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 47 [2024-11-06 18:38:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:00,342 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2024-11-06 18:38:00,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 25 states have internal predecessors, (49), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-06 18:38:00,342 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2024-11-06 18:38:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 18:38:00,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:00,343 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:00,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:38:00,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:00,548 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:00,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash -581569404, now seen corresponding path program 4 times [2024-11-06 18:38:00,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:00,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223024511] [2024-11-06 18:38:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:00,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:00,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:00,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:00,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:00,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:00,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:38:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:38:00,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:00,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223024511] [2024-11-06 18:38:00,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223024511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:00,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369430760] [2024-11-06 18:38:00,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:38:00,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:00,967 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:00,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:38:01,021 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:38:01,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:01,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-06 18:38:01,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:01,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:38:01,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-06 18:38:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:38:01,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:01,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-06 18:38:01,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-06 18:38:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:38:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369430760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:01,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 35 [2024-11-06 18:38:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773081224] [2024-11-06 18:38:01,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:01,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-06 18:38:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:01,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-06 18:38:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 18:38:01,635 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 11 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-06 18:38:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:02,094 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2024-11-06 18:38:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 18:38:02,094 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 11 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) Word has length 51 [2024-11-06 18:38:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:02,095 INFO L225 Difference]: With dead ends: 101 [2024-11-06 18:38:02,095 INFO L226 Difference]: Without dead ends: 99 [2024-11-06 18:38:02,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=1330, Unknown=0, NotChecked=0, Total=1560 [2024-11-06 18:38:02,096 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 58 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:02,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 482 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:38:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-06 18:38:02,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 67. [2024-11-06 18:38:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 55 states have internal predecessors, (59), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 18:38:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2024-11-06 18:38:02,104 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 51 [2024-11-06 18:38:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:02,104 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2024-11-06 18:38:02,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 11 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-06 18:38:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2024-11-06 18:38:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 18:38:02,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:02,105 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:02,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 18:38:02,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-06 18:38:02,305 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:02,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash -685431891, now seen corresponding path program 5 times [2024-11-06 18:38:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474782069] [2024-11-06 18:38:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:02,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:02,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:02,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:02,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 19 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 18:38:02,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:02,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474782069] [2024-11-06 18:38:02,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474782069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:02,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722765000] [2024-11-06 18:38:02,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:38:02,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:02,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:02,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:02,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:38:02,477 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-06 18:38:02,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:02,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 18:38:02,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 18:38:02,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 18:38:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722765000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:02,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:02,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-06 18:38:02,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276008078] [2024-11-06 18:38:02,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:02,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 18:38:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 18:38:02,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:38:02,731 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-06 18:38:02,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:02,899 INFO L93 Difference]: Finished difference Result 133 states and 141 transitions. [2024-11-06 18:38:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 18:38:02,899 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 51 [2024-11-06 18:38:02,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:02,900 INFO L225 Difference]: With dead ends: 133 [2024-11-06 18:38:02,900 INFO L226 Difference]: Without dead ends: 109 [2024-11-06 18:38:02,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=649, Unknown=0, NotChecked=0, Total=870 [2024-11-06 18:38:02,901 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:02,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 178 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-06 18:38:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 83. [2024-11-06 18:38:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 71 states have internal predecessors, (75), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 18:38:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-11-06 18:38:02,919 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 51 [2024-11-06 18:38:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:02,919 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-11-06 18:38:02,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-06 18:38:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-11-06 18:38:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 18:38:02,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:02,922 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:02,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 18:38:03,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:03,123 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:03,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1453174918, now seen corresponding path program 6 times [2024-11-06 18:38:03,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:03,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204959405] [2024-11-06 18:38:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:03,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:03,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:03,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:03,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:03,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:03,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:38:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 18:38:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204959405] [2024-11-06 18:38:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204959405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724282741] [2024-11-06 18:38:03,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:38:03,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:03,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:03,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:03,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:38:03,309 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-06 18:38:03,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:03,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 18:38:03,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 18:38:03,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 18:38:03,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724282741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:03,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-06 18:38:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755826522] [2024-11-06 18:38:03,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:03,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-06 18:38:03,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-06 18:38:03,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-06 18:38:03,522 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-06 18:38:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:03,628 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2024-11-06 18:38:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 18:38:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 55 [2024-11-06 18:38:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:03,629 INFO L225 Difference]: With dead ends: 103 [2024-11-06 18:38:03,629 INFO L226 Difference]: Without dead ends: 86 [2024-11-06 18:38:03,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 107 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-06 18:38:03,630 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:03,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 149 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-06 18:38:03,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2024-11-06 18:38:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 60 states have internal predecessors, (63), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 18:38:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2024-11-06 18:38:03,643 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 55 [2024-11-06 18:38:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:03,643 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2024-11-06 18:38:03,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-06 18:38:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2024-11-06 18:38:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-06 18:38:03,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:03,645 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:03,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 18:38:03,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:03,846 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:03,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1754460089, now seen corresponding path program 7 times [2024-11-06 18:38:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707813654] [2024-11-06 18:38:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:04,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:04,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:04,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:04,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:04,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:38:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:04,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 18:38:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 18:38:04,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:04,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707813654] [2024-11-06 18:38:04,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707813654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:04,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135632990] [2024-11-06 18:38:04,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:38:04,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:04,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:04,336 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:04,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:38:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:04,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-06 18:38:04,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:04,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:38:04,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:04,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2024-11-06 18:38:04,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-06 18:38:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 48 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:38:04,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135632990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:09,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 18:38:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2024-11-06 18:38:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806078346] [2024-11-06 18:38:09,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:09,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-06 18:38:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-06 18:38:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1271, Unknown=1, NotChecked=0, Total=1482 [2024-11-06 18:38:09,189 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 29 states have internal predecessors, (63), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-06 18:38:13,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-06 18:38:17,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-06 18:38:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:17,577 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2024-11-06 18:38:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-06 18:38:17,579 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 29 states have internal predecessors, (63), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 59 [2024-11-06 18:38:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:17,581 INFO L225 Difference]: With dead ends: 94 [2024-11-06 18:38:17,582 INFO L226 Difference]: Without dead ends: 92 [2024-11-06 18:38:17,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=342, Invalid=1913, Unknown=1, NotChecked=0, Total=2256 [2024-11-06 18:38:17,582 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 110 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:17,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 201 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 457 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2024-11-06 18:38:17,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-06 18:38:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2024-11-06 18:38:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 18:38:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2024-11-06 18:38:17,595 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 59 [2024-11-06 18:38:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:17,595 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2024-11-06 18:38:17,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 29 states have internal predecessors, (63), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-06 18:38:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2024-11-06 18:38:17,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-06 18:38:17,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:17,597 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:17,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-06 18:38:17,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:17,798 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:17,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:17,798 INFO L85 PathProgramCache]: Analyzing trace with hash 120574397, now seen corresponding path program 8 times [2024-11-06 18:38:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:17,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125636904] [2024-11-06 18:38:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:17,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:18,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:18,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:18,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:18,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:18,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:38:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:18,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 18:38:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 18:38:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125636904] [2024-11-06 18:38:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125636904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405893142] [2024-11-06 18:38:18,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:38:18,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:18,120 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:18,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:38:18,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:38:18,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:18,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-06 18:38:18,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:18,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:38:18,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2024-11-06 18:38:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 18:38:18,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:18,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-06 18:38:18,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-06 18:38:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 18:38:18,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405893142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:18,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:18,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 31 [2024-11-06 18:38:18,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039308225] [2024-11-06 18:38:18,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:18,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-06 18:38:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-06 18:38:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2024-11-06 18:38:18,808 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 9 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-06 18:38:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:19,142 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2024-11-06 18:38:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 18:38:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 9 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) Word has length 63 [2024-11-06 18:38:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:19,144 INFO L225 Difference]: With dead ends: 91 [2024-11-06 18:38:19,144 INFO L226 Difference]: Without dead ends: 74 [2024-11-06 18:38:19,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2024-11-06 18:38:19,144 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 83 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:19,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 345 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:38:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-06 18:38:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2024-11-06 18:38:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 18:38:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-11-06 18:38:19,150 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 63 [2024-11-06 18:38:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:19,150 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-11-06 18:38:19,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 9 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-06 18:38:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-11-06 18:38:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-06 18:38:19,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:19,151 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:19,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 18:38:19,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-06 18:38:19,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:19,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:19,352 INFO L85 PathProgramCache]: Analyzing trace with hash -700161792, now seen corresponding path program 9 times [2024-11-06 18:38:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:19,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940496087] [2024-11-06 18:38:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:19,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:38:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 18:38:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 18:38:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-06 18:38:19,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940496087] [2024-11-06 18:38:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940496087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836577994] [2024-11-06 18:38:19,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:38:19,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:19,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:19,758 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:19,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 18:38:19,841 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-06 18:38:19,841 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:19,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 18:38:19,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:20,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:38:20,220 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:38:20,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-06 18:38:20,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2024-11-06 18:38:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 33 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 18:38:20,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:40,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836577994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:40,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 18:38:40,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2024-11-06 18:38:40,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191585102] [2024-11-06 18:38:40,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:40,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-06 18:38:40,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:40,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-06 18:38:40,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1103, Unknown=5, NotChecked=0, Total=1260 [2024-11-06 18:38:40,706 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-06 18:38:41,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:41,103 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2024-11-06 18:38:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-06 18:38:41,103 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) Word has length 71 [2024-11-06 18:38:41,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:41,103 INFO L225 Difference]: With dead ends: 78 [2024-11-06 18:38:41,103 INFO L226 Difference]: Without dead ends: 76 [2024-11-06 18:38:41,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 83 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=260, Invalid=1715, Unknown=5, NotChecked=0, Total=1980 [2024-11-06 18:38:41,104 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 102 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:41,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 297 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:38:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-06 18:38:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2024-11-06 18:38:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 18:38:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2024-11-06 18:38:41,110 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 71 [2024-11-06 18:38:41,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:41,111 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2024-11-06 18:38:41,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-06 18:38:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2024-11-06 18:38:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-06 18:38:41,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:41,111 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:41,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-06 18:38:41,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-06 18:38:41,312 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:41,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1947082230, now seen corresponding path program 10 times [2024-11-06 18:38:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509624781] [2024-11-06 18:38:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:38:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 18:38:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 18:38:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 89 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-06 18:38:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509624781] [2024-11-06 18:38:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509624781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:41,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159513616] [2024-11-06 18:38:41,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:38:41,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:41,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:41,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:41,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 18:38:41,734 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:38:41,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:41,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-06 18:38:41,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:41,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-06 18:38:42,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-06 18:38:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 89 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-06 18:38:42,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:42,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-06 18:38:42,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-06 18:38:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 89 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-06 18:38:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159513616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:42,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 19] total 38 [2024-11-06 18:38:42,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340177507] [2024-11-06 18:38:42,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:42,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-06 18:38:42,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-06 18:38:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 18:38:42,501 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 34 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-06 18:38:43,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:43,129 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2024-11-06 18:38:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 18:38:43,129 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 34 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) Word has length 75 [2024-11-06 18:38:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:43,130 INFO L225 Difference]: With dead ends: 111 [2024-11-06 18:38:43,130 INFO L226 Difference]: Without dead ends: 109 [2024-11-06 18:38:43,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 139 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=1821, Unknown=0, NotChecked=0, Total=2070 [2024-11-06 18:38:43,131 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 145 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:43,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 535 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:38:43,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-06 18:38:43,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 77. [2024-11-06 18:38:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 18:38:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2024-11-06 18:38:43,138 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 75 [2024-11-06 18:38:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:43,138 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2024-11-06 18:38:43,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 34 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-06 18:38:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2024-11-06 18:38:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-06 18:38:43,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:43,139 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:43,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 18:38:43,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:43,339 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:43,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:43,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1814327276, now seen corresponding path program 11 times [2024-11-06 18:38:43,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:43,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90238580] [2024-11-06 18:38:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:43,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:43,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:43,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:43,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:43,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:43,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:38:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:43,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 18:38:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:43,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 18:38:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 33 proven. 62 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 18:38:43,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:43,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90238580] [2024-11-06 18:38:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90238580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:43,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021847010] [2024-11-06 18:38:43,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:38:43,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:43,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:43,494 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:43,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 18:38:43,557 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-06 18:38:43,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:43,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 18:38:43,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 18:38:43,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 18:38:43,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021847010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:43,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:43,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-06 18:38:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820125440] [2024-11-06 18:38:43,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:43,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 18:38:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 18:38:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:38:43,812 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-06 18:38:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:43,908 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2024-11-06 18:38:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 18:38:43,909 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 79 [2024-11-06 18:38:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:43,909 INFO L225 Difference]: With dead ends: 117 [2024-11-06 18:38:43,909 INFO L226 Difference]: Without dead ends: 89 [2024-11-06 18:38:43,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 153 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-06 18:38:43,910 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 54 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:43,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 128 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:43,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-06 18:38:43,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2024-11-06 18:38:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 18:38:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-06 18:38:43,925 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 79 [2024-11-06 18:38:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:43,925 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-06 18:38:43,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-06 18:38:43,925 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-06 18:38:43,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-06 18:38:43,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:43,925 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:43,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 18:38:44,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:44,126 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:44,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash -502341447, now seen corresponding path program 12 times [2024-11-06 18:38:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:44,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865951361] [2024-11-06 18:38:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 18:38:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 18:38:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:38:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:38:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 18:38:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 18:38:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-06 18:38:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 18 proven. 116 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-06 18:38:44,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865951361] [2024-11-06 18:38:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865951361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465613260] [2024-11-06 18:38:44,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:38:44,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:44,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:44,563 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:44,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 18:38:44,669 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-06 18:38:44,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:44,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-06 18:38:44,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:44,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-06 18:38:45,001 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-06 18:38:45,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2024-11-06 18:38:45,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2024-11-06 18:38:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 40 proven. 116 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-06 18:38:45,234 INFO L311 TraceCheckSpWp]: Computing backward predicates...